How to "Search Everything" in 1Password 8?

Uh oh - more problems with searching everything:

When searching for something that is within a longer word or string, 1Password will find it only if the search query is at the start of the string.

For example, if you search for "12345", and you have only "abc12345" in your items, 1Password will NOT find that item.

If you have "12345abc" in your items, 1Password WILL find that item.

Here is specifically why this is a problem: Credit card numbers are often represented, at e-commerce merchants, by only their last 4 digits. I have a bunch of cards, and recently I've had to change some (pesky credit card hackers!). When I visit an e-commerce site, is says my stored payment ends in 1234 - but when I search 1Password for that string, it brings up no results, despite the fact that there is a credit card stored in 1Password that ends in 1234!

(I'm not sure how this used to work in older versions - but I know how I'd like it to work ;)